True, however, I think that quote is simply being used as a bullet point heading. In 1977 Vader was not Anakin so the problem is a post ESB one. Obi-wan isn’t shocked to see his friend on the Death Star because his old pupil was always just Darth Vader. Once he’s changed to be Luke’s father in 1980 there are more gaps to fill. Obviously there have been further retcons since and they meet in a TV series.
I don’t think the quote was simply being used as a bullet point, as OP made a specific entry for it. Point 14 already addressed what you’re saying about Obi-Wan and Vader, so there was no need to add point 15 unless it was to talk about that particular quote.
And since I’ve already seen the quote used incorrectly a few times (for example, I remember seeing people use it to justify Obi-Wan and Vader meeting in the Kenobi show, because “how could Obi-Wan know Vader’s more machine than man at the beginning of ANH?”), I just wanted to point it out.
By the way, I’m not trying to defend the many inconsistencies that exist between the OT and PT, it’s usually the thing that annoys me the most about the franchise!